#include <asm/thread_info.h>
#include <asm/segment.h>
#include <asm/vsyscall32.h>
+#include <asm/irqflags.h>
#include <linux/linkage.h>
+#define IA32_NR_syscalls ((ia32_syscall_end - ia32_sys_call_table)/8)
+
.macro IA32_ARG_FIXUP noebp=0
movl %edi,%r8d
.if \noebp
*/
ENTRY(ia32_sysenter_target)
CFI_STARTPROC32 simple
+ CFI_SIGNAL_FRAME
CFI_DEF_CFA rsp,0
CFI_REGISTER rsp,rbp
swapgs
movq %gs:pda_kernelstack, %rsp
addq $(PDA_STACKOFFSET),%rsp
+ /*
+ * No need to follow this irqs on/off section: the syscall
+ * disabled irqs, here we enable it straight after entry:
+ */
sti
movl %ebp,%ebp /* zero extension */
pushq $__USER32_DS
pushq %rax
CFI_ADJUST_CFA_OFFSET 8
cld
- SAVE_ARGS 0,0,1
+ SAVE_ARGS 0,0,0
/* no need to do an access_ok check here because rbp has been
32bit zero extended */
1: movl (%rbp),%r9d
CFI_REMEMBER_STATE
jnz sysenter_tracesys
sysenter_do_call:
- cmpl $(IA32_NR_syscalls),%eax
- jae ia32_badsys
+ cmpl $(IA32_NR_syscalls-1),%eax
+ ja ia32_badsys
IA32_ARG_FIXUP 1
call *ia32_sys_call_table(,%rax,8)
movq %rax,RAX-ARGOFFSET(%rsp)
GET_THREAD_INFO(%r10)
cli
+ TRACE_IRQS_OFF
testl $_TIF_ALLWORK_MASK,threadinfo_flags(%r10)
jnz int_ret_from_sys_call
andl $~TS_COMPAT,threadinfo_status(%r10)
CFI_REGISTER rsp,rcx
movl $VSYSCALL32_SYSEXIT,%edx /* User %eip */
CFI_REGISTER rip,rdx
+ TRACE_IRQS_ON
swapgs
sti /* sti only takes effect after the next instruction */
/* sysexit */
.previous
jmp sysenter_do_call
CFI_ENDPROC
+ENDPROC(ia32_sysenter_target)
/*
* 32bit SYSCALL instruction entry.
*/
ENTRY(ia32_cstar_target)
CFI_STARTPROC32 simple
- CFI_DEF_CFA rsp,0
+ CFI_SIGNAL_FRAME
+ CFI_DEF_CFA rsp,PDA_STACKOFFSET
CFI_REGISTER rip,rcx
/*CFI_REGISTER rflags,r11*/
swapgs
movl %esp,%r8d
CFI_REGISTER rsp,r8
movq %gs:pda_kernelstack,%rsp
+ /*
+ * No need to follow this irqs on/off section: the syscall
+ * disabled irqs and here we enable it straight after entry:
+ */
sti
SAVE_ARGS 8,1,1
movl %eax,%eax /* zero extension */
CFI_REMEMBER_STATE
jnz cstar_tracesys
cstar_do_call:
- cmpl $IA32_NR_syscalls,%eax
- jae ia32_badsys
+ cmpl $IA32_NR_syscalls-1,%eax
+ ja ia32_badsys
IA32_ARG_FIXUP 1
call *ia32_sys_call_table(,%rax,8)
movq %rax,RAX-ARGOFFSET(%rsp)
GET_THREAD_INFO(%r10)
cli
+ TRACE_IRQS_OFF
testl $_TIF_ALLWORK_MASK,threadinfo_flags(%r10)
jnz int_ret_from_sys_call
andl $~TS_COMPAT,threadinfo_status(%r10)
CFI_REGISTER rip,rcx
movl EFLAGS-ARGOFFSET(%rsp),%r11d
/*CFI_REGISTER rflags,r11*/
+ TRACE_IRQS_ON
movl RSP-ARGOFFSET(%rsp),%esp
CFI_RESTORE rsp
swapgs
.quad 1b,ia32_badarg
.previous
jmp cstar_do_call
+END(ia32_cstar_target)
ia32_badarg:
movq $-EFAULT,%rax
ENTRY(ia32_syscall)
CFI_STARTPROC simple
+ CFI_SIGNAL_FRAME
CFI_DEF_CFA rsp,SS+8-RIP
/*CFI_REL_OFFSET ss,SS-RIP*/
CFI_REL_OFFSET rsp,RSP-RIP
/*CFI_REL_OFFSET rflags,EFLAGS-RIP*/
/*CFI_REL_OFFSET cs,CS-RIP*/
CFI_REL_OFFSET rip,RIP-RIP
- swapgs
+ swapgs
+ /*
+ * No need to follow this irqs on/off section: the syscall
+ * disabled irqs and here we enable it straight after entry:
+ */
sti
movl %eax,%eax
pushq %rax
testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP),threadinfo_flags(%r10)
jnz ia32_tracesys
ia32_do_syscall:
- cmpl $(IA32_NR_syscalls),%eax
- jae ia32_badsys
+ cmpl $(IA32_NR_syscalls-1),%eax
+ ja ia32_badsys
IA32_ARG_FIXUP
call *ia32_sys_call_table(,%rax,8) # xxx: rip relative
ia32_sysret:
LOAD_ARGS ARGOFFSET /* reload args from stack in case ptrace changed it */
RESTORE_REST
jmp ia32_do_syscall
+END(ia32_syscall)
ia32_badsys:
movq $0,ORIG_RAX-ARGOFFSET(%rsp)
movq $-ENOSYS,RAX-ARGOFFSET(%rsp)
jmp int_ret_from_sys_call
-ni_syscall:
- movq %rax,%rdi
- jmp sys32_ni_syscall
-
quiet_ni_syscall:
movq $-ENOSYS,%rax
ret
popq %r11
CFI_ENDPROC
CFI_STARTPROC32 simple
+ CFI_SIGNAL_FRAME
CFI_DEF_CFA rsp,SS+8-ARGOFFSET
CFI_REL_OFFSET rax,RAX-ARGOFFSET
CFI_REL_OFFSET rcx,RCX-ARGOFFSET
RESTORE_REST
jmp ia32_sysret /* misbalances the return cache */
CFI_ENDPROC
+END(ia32_ptregs_common)
.section .rodata,"a"
.align 8
- .globl ia32_sys_call_table
ia32_sys_call_table:
.quad sys_restart_syscall
.quad sys_exit
.quad sys_symlink
.quad sys_lstat
.quad sys_readlink /* 85 */
-#ifdef CONFIG_IA32_AOUT
.quad sys_uselib
-#else
- .quad quiet_ni_syscall
-#endif
.quad sys_swapon
.quad sys_reboot
.quad compat_sys_old_readdir
.quad sys32_vm86_warning /* vm86old */
.quad compat_sys_wait4
.quad sys_swapoff /* 115 */
- .quad sys32_sysinfo
+ .quad compat_sys_sysinfo
.quad sys32_ipc
.quad sys_fsync
.quad stub32_sigreturn
.quad sys_setdomainname
.quad sys_uname
.quad sys_modify_ldt
- .quad sys32_adjtimex
+ .quad compat_sys_adjtimex
.quad sys32_mprotect /* 125 */
.quad compat_sys_sigprocmask
.quad quiet_ni_syscall /* create_module */
.quad sys_init_module
.quad sys_delete_module
.quad quiet_ni_syscall /* 130 get_kernel_syms */
- .quad sys_quotactl
+ .quad sys32_quotactl
.quad sys_getpgid
.quad sys_fchdir
.quad quiet_ni_syscall /* bdflush */
.quad sys_sched_yield
.quad sys_sched_get_priority_max
.quad sys_sched_get_priority_min /* 160 */
- .quad sys_sched_rr_get_interval
+ .quad sys32_sched_rr_get_interval
.quad compat_sys_nanosleep
.quad sys_mremap
.quad sys_setresuid16
.quad quiet_ni_syscall /* tux */
.quad quiet_ni_syscall /* security */
.quad sys_gettid
- .quad sys_readahead /* 225 */
+ .quad sys32_readahead /* 225 */
.quad sys_setxattr
.quad sys_lsetxattr
.quad sys_fsetxattr
.quad compat_sys_io_getevents
.quad compat_sys_io_submit
.quad sys_io_cancel
- .quad sys_fadvise64 /* 250 */
+ .quad sys32_fadvise64 /* 250 */
.quad quiet_ni_syscall /* free_huge_pages */
.quad sys_exit_group
.quad sys32_lookup_dcookie
.quad sys_mknodat
.quad sys_fchownat
.quad compat_sys_futimesat
- .quad compat_sys_newfstatat /* 300 */
+ .quad sys32_fstatat /* 300 */
.quad sys_unlinkat
.quad sys_renameat
.quad sys_linkat
.quad sys_readlinkat /* 305 */
.quad sys_fchmodat
.quad sys_faccessat
-ia32_syscall_end:
- .rept IA32_NR_syscalls-(ia32_syscall_end-ia32_sys_call_table)/8
- .quad ni_syscall
- .endr
+ .quad compat_sys_pselect6
+ .quad compat_sys_ppoll
+ .quad sys_unshare /* 310 */
+ .quad compat_sys_set_robust_list
+ .quad compat_sys_get_robust_list
+ .quad sys_splice
+ .quad sys32_sync_file_range
+ .quad sys_tee /* 315 */
+ .quad compat_sys_vmsplice
+ .quad compat_sys_move_pages
+ .quad sys_getcpu
+ .quad sys_epoll_pwait
+ .quad compat_sys_utimensat /* 320 */
+ .quad compat_sys_signalfd
+ .quad compat_sys_timerfd
+ .quad sys_eventfd
+ .quad sys32_fallocate
+ia32_syscall_end: